| Message ID | 1345558030-29370-14-git-send-email-avi@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 4649618..a35e05e 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3321,7 +3321,7 @@ static bool rmode_segment_valid(struct kvm_vcpu *vcpu, int seg) return false; if (var.limit < 0xffff) return false; - if ((ar | (3 << AR_DPL_SHIFT)) != 0xf3) + if (((ar | (3 << AR_DPL_SHIFT)) & ~(AR_G_MASK | AR_DB_MASK)) != 0xf3) return false; return true;
We will enter the guest with G and D cleared; as real hardware ignores D in real mode, and G is taken care of by the limit test, we allow more code to run in vm86 mode. Signed-off-by: Avi Kivity <avi@redhat.com> --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)